# Under Armour vs SidelineSwap

The clearest difference is update cadence: SidelineSwap at every 5 days against Under Armour's fortnightly. SidelineSwap also leads on monetization model (ad-supported vs free with in-app purchases). On price, rating, review sentiment and ratings volume there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 4.8 for Under Armour against 4.9 for SidelineSwap. Both are backed by a comparable volume of ratings — 77K and 59K respectively. Written reviews are what separate them: 82% of Under Armour's written reviews are positive against 80% of SidelineSwap's.

Under Armour ships an update fortnightly, SidelineSwap every 5 days. Both last shipped on October 18, 2026.

## The numbers

| Metric | Under Armour | SidelineSwap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (77K ratings)](https://appshunter.io/ios/app/under-armour/id1092704571/reviews) | **[4.9 (59K ratings)](https://appshunter.io/ios/app/sidelineswap/id1215421737/reviews)** |
| Number of ratings | **77K** | 59K |
| Positive reviews | **82.0% of reviews** | 80.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 132 MB | 79 MB |
| Requires iOS | 18.0 | **17.4** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Under Armour, Inc.](https://appshunter.io/developer/291890423) | [SidelineSwap, Inc](https://appshunter.io/developer/1215421736) |

## What reviewers say

### Under Armour

[App page](https://appshunter.io/ios/app/under-armour/id1092704571)

Shop a wide range of athletic clothing, shoes, and gear designed for all fitness levels. Discover exclusive collections, receive personalized recommendations, and enjoy benefits like free shipping and rewards.

**Highlights:** Shop athletic clothing, shoes, and gear, Exclusive collections (Curry Brand, Project Rock), New drop alerts, Personalized product recommendations, Free shipping, returns, and exchanges, UA Rewards program with points and exclusive benefits, Streamlined checkout with multiple payment options

**Features:** Apple Wallet

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to navigate app
- 🚀 Smooth checkout process
- 💡 Ability to save items for later
- 👍 User-friendly interface
- 👍 Clean and intuitive design

**What reviewers complain about**

- 🐛 Inaccurate product availability
- 🐛 Inconsistent order fulfillment
- 🔍 Difficulty finding matching items
- 🐛 Unreliable customer service
- 🐛 Inability to edit orders

**Reported bugs**

- App crashing or freezing
- Incorrect product information or pricing
- Issues with login and account management
- Syncing problems between app and website

**Requested features**

- Ability to edit personal information within the app
- Option to track order status and history
- Improved product recommendations and outfit suggestions
- Better integration between app and website experience


### SidelineSwap

[App page](https://appshunter.io/ios/app/sidelineswap/id1215421737)

This app connects athletes to buy and sell sports equipment. Find new and used gear at significant discounts or easily list your own items to earn cash. Join a global community of athletes trading their sports essentials.

**Highlights:** Shop new and used sports equipment, Save up to 70% on gear, Sell equipment in minutes, Prepaid shipping labels provided, Global marketplace for athletes

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Easy to list and sell items
- 👍 Convenient shipping and payment process
- 🚀 Fast sales
- 👍 Lots of items to choose from
- 👍 Great way to buy/sell used sports gear

**What reviewers complain about**

- 💰 High fees and commissions for sellers
- 🔒 Lack of buyer/seller reviews
- 🐛 Buggy app with technical issues
- 🔒 Poor customer support and dispute resolution
- 🔒 Counterfeit items allowed on the platform

**Reported bugs**

- App login issues
- Listing items gets stuck in draft status
- Notification badges not clearing properly

**Requested features**

- Add support for Canadian currency
- Allow sellers to rate buyers
- Improve in-app communication between buyers and sellers
- Provide more transparency on fees and policies


## Frequently asked questions

### Is Under Armour free?

Under Armour is free to download, with no in-app purchases.

### Is SidelineSwap free?

SidelineSwap is free to download, with no in-app purchases.

### Which has better reviews, Under Armour or SidelineSwap?

SidelineSwap is rated higher. Under Armour averages 4.8 out of 5 from 77K ratings, while SidelineSwap averages 4.9 from 59K ratings.

### Do Under Armour or SidelineSwap have ads?

Neither Under Armour nor SidelineSwap shows ads.

### Which is updated more often, Under Armour or SidelineSwap?

Under Armour ships an update fortnightly, and SidelineSwap every 5 days. Most recently, Under Armour was updated on October 18, 2026 and SidelineSwap on October 18, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*